Tweak nb names

Author: smithara

notebooks.json

@@ -106,25 +106,25 @@
             "path": "notebooks/04a1_Geomag-Models-VirES.ipynb",
             "name": "Model residuals through VirES",
             "class": "viresdemo",
-            "group": "Geomagnetic Models",
+            "group": "Geomagnetic Models & Ground Obs",
             "rank": 1
         },{
             "path": "notebooks/04b1_Geomag-Models-eoxmagmod.ipynb",
             "name": "Forward eval + isolines",
             "class": "viresdemo",
-            "group": "Geomagnetic Models",
+            "group": "Geomagnetic Models & Ground Obs",
             "rank": 2
         },{
             "path": "notebooks/04c1_Geomag-Ground-Data-FTP.ipynb",
-            "name": "Ground observatories - FTP",
+            "name": "Ground Obs - FTP",
             "class": "viresdemo",
-            "group": "Geomagnetic Models",
+            "group": "Geomagnetic Models & Ground Obs",
             "rank": 3
         },{
             "path": "notebooks/04c2_Geomag-Ground-Data-VirES.ipynb",
-            "name": "Ground observatories - VirES",
+            "name": "Ground Obs - VirES",
             "class": "viresdemo",
-            "group": "Geomagnetic Models",
+            "group": "Geomagnetic Models & Ground Obs",
             "rank": 4
         },{
             "path": "notebooks/05a1_Polar-Region-Plots.ipynb",